<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
    <clipPath id="clip">
        <!-- fill and stroke properties should be ignored -->
        <text x="40" y="160" font-size="80" font-weight="bold"><tspan stroke="red" fill="none">CLIP</tspan></text>
    </clipPath>
</defs>
<rect x="40" y="40" height="300" width="300" style="fill:green;clip-path:url(#clip);"/>
</svg>